Technique for producing polyester filament yarn using false twisting distortion elasticizer

A technology of false-twist texturing and polyester filament, which is used in textiles and papermaking, etc., can solve the problems of short heating distance and time of coarse denier yarn, not good enough hand feeling, unfavorable uniform stretching, etc. , the effect of significant economic benefits

Active Publication Date: 2010-10-27
杭州逸暻化纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with natural fiber fabrics such as cotton, polyester fabrics have poor hygroscopicity, moisture retention, and air permeability, and are easy to wear next to the skin and have a stuffy feeling. Improvement and the improvement of visual aesthetics are particularly important. Various functional types and differentiated products are constantly emerging. The embodiment of the differentiated functionality of most of the products requires polyester fibers to have better shape or hollowness. Good shape retention effect can meet the functional requirements of clothing fabrics
The structure of the flat drawing machine in the prior art determines that due to the short heating distance and time, the coarse denier yarn is unevenly and insufficiently heated, which is not conducive to uniform stretching, and the product is prone to uneven heat and humidity shrinkage, and the fabric size is unstable, and the hand feel not good enough
[0003] False twist texturing machines are usually only used to produce false twist textured yarns, which cannot guarantee fidelity properties such as the degree of profile and hollowness of the finished product, and it is difficult to produce FDY products
It is used to produce the above-mentioned fully drawn yarn FDY or the process for polyester fiber filaments with high shape retention requirements such as degree of shape and hollowness, and no relevant or similar reports have been found in Chinese patent documents

Method used

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  • Technique for producing polyester filament yarn using false twisting distortion elasticizer
  • Technique for producing polyester filament yarn using false twisting distortion elasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1——FDY process of producing fully drawn yarn, only stretching deformation is carried out, no false twist deformation.

[0018] For its process, see figure 1 (without false twister 6): the processed raw material polyester pre-oriented yarn (POY) → first roller 1 → hot box entrance yarn guide 2 → first hot box 3 (non-contact heating) → steering yarn guide 5 → second roller 7 → Network nozzle 8 → Second heat box 9 → Three rollers → Oil tanker → Winding and forming to make FDY. Outlet yarn guide 4 is empty.

[0019] Specifically: Polyester pre-oriented yarn 630dtex / 96fPOY is fed from the original yarn frame through the wire guide tube to the first roller 1, enters the first hot box through the hot box entrance yarn guide 2, and enters the first hot box 3 After non-contact heating, it enters the second roller through the steering yarn guide 5 7. Stretch and deform between the first roller and the second roller, network through the network nozzle 8, and then ente...

Embodiment 2

[0020] Embodiment 2——FDY process for producing fully drawn yarn, only stretching deformation is carried out, no false twist deformation.

[0021] Its technological process is the same as above. Specifically, the polyester pre-oriented yarn 85dtex / 48fPOY is fed from the original yarn frame through the guide tube to the first roller 1, enters the first hot box through the hot box inlet guide 2, and enters the first hot box 3. After non-contact heating, it enters the second roller through the steering guide 5 7. Stretch and deform between the first roller 1 and the second roller 7, network and gather through the network nozzle 8, then heat setting in the second heat box 9, oil the tanker, and wind and shape. Among them, vehicle speed: 650m / min; stretch ratio: 1.75; network air pressure: 1.20kgf / cm 2 Second overfeeding: 4.50%; Three overfeeding: 7.20%; First heating box temperature: 82°C; Second heating box temperature: 120°C to obtain 50D / 48F FDY finished products.

Embodiment 3

[0022] Example 3——Production of polyester fiber filaments with high shape retention requirements such as degree of irregularity and hollowness

[0023] The process flow is shown in Figure 2 (using false twister 6), the processed raw material is hollow and other special-shaped cross-section polyester pre-oriented yarn (POY)→one roller 1→hot box inlet yarn guide 2→one hot box 3 (non-contact heating) → Turning yarn guide 5 → False twister 6 (low false twist deformation) → Second roller 7 → Network nozzle 8 → Second heating box 9 → Three rollers → Oil tanker → Winding and forming, to obtain polyester hollow with high fidelity performance, etc. Special-shaped cross-section low-elastic network wire. Outlet yarn guide 4 is empty.

[0024] Specifically, the polyester pre-oriented yarn 265dtex / 24f cross hollow POY is fed from the original yarn frame through the wire guide tube to a roller 1, enters a hot box 3 through the hot box entrance yarn guide 2, and enters a hot box 3 for non-c...

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PUM

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Abstract

The invention relates to a process for manufacturing polyester fiber filament by using a false twisting deformation elastic-adding machine, which is characterized in that raw material strand silk which is from a roller (1) passes through an inlet silk guide (2), then directly passes through a hot box(3) and is heated by the mode of non-contact heating, then moves to a turning silk guide (5), (or passes through a twisting machine 6), then passes through a two-roller (7) and reaches to a network jet nozzle (8) and is manufactured to obtain fully drawn yarn FDY (or shape preserving performances with high requirements such as profile degree, degree of hollowness and the like) polyester fiber filament, The process has the advantages of without altering the device, simple process adjustment andthe like, and the switching of the two product processes is flexible and convenient, and the process efficiently extends the using range of the false twisting deformation elastic-adding machine and has obvious economic benefits.

Description

technical field [0001] The invention relates to a production method of polyester filaments, in particular to a process for producing polyester filaments by using a false twist texturing machine. Background technique [0002] Polyester chemical fiber filament is a kind of clothing fabric raw material used in daily life. The biggest advantage of its fabric is that it has good wrinkle resistance and shape retention, and is suitable for outerwear. However, compared with natural fiber fabrics such as cotton, polyester fabrics have poor hygroscopicity, moisture retention, and air permeability, and are easy to wear next to the skin and have a stuffy feeling. Improvement and the improvement of visual aesthetics are particularly important. Various functional types and differentiated products are constantly emerging. The embodiment of the differentiated functionality of most of the products requires polyester fibers to have better shape or hollowness. A good shape retention effect c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02J1/22D02J1/08D02G1/02
Inventor 张守运
Owner 杭州逸暻化纤有限公司
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